Cita APA (7a ed.)

Hartmann, H. (1981). Essays on ego psychology: Selected problems in psychoanalytic theory. International Universities Press.

Cita Chicago Style (17a ed.)

Hartmann, Heinz. Essays on Ego Psychology: Selected Problems in Psychoanalytic Theory. New York: International Universities Press, 1981.

Cita MLA (9a ed.)

Hartmann, Heinz. Essays on Ego Psychology: Selected Problems in Psychoanalytic Theory. International Universities Press, 1981.